For the second straight season, a Washington Nationals phenom is driving the sports card market. This week, his current minor leaue team's hometown paper and SI take a look at his card values, his questionable attitude, and most important to hobbyists and investors, the value of his autograph along with his willingness to sign it.
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For kids and adults, the hunt is on for Bryce Harper's autograph
2017 Topps Heritage High Number Preview
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